Calculus of Variation 카테고리는 5th (Marion)의 chapter 6 순서를 따라갑니다 1. Calculus of Variation find an extreme solution (max or min) $ J=\int_{x_{1}}^{x_{2}}f(y(x),y'(x);x)dx $ ($ y'\equiv \frac{\mathrm{d} y}{\mathrm{d} x} $ ) (x: independent variable, y: dependent variable) $ y=y(\alpha ,x) $ $ \alpha =0 \rightarrow y=y(0,x)=y(x) $: function that yields an extreme for J $ \Rightarrow y=y(\alpha ,x)=y(0..
